Each week, TEDx chooses four of our favorite talks, highlighting just a few of the enlightening speakers from the TEDx community, and its diverse constellation of ideas worth spreading. Below, give this week’s talks a listen.

Mapping conservation projects across Africa: Alta De Vos at TEDxStellenbosch
Millions of dollars and thousands of volunteers are employed in conservation efforts across Africa, but until recently there was no way to keep track of exactly what was going on. Seizing an opportunity to fix this, Alta De Vos and her team developed the online MAPA project, a platform that allows conservationists to share and keep track of their projects across the continent. (Filmed at TEDxStellenbosch)